﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using UploadFile.Common;
using UploadFile.CrudProviders.MongoDB;

namespace UploadFile
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
            //解决Multipart body length limit 134217728 exceeded
            services.Configure<FormOptions>(x =>
            {
                x.ValueLengthLimit = int.MaxValue;
                x.MultipartBodyLengthLimit = int.MaxValue; // In case of multipart
            });
            services.Configure<ApiBehaviorOptions>(options =>
            {
                options.SuppressModelStateInvalidFilter = true;
            });
            RegisterApplicationServices(services);
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            app.UseStaticFiles();
            app.UseMvc();
        }

        private void RegisterApplicationServices(IServiceCollection services)
        {
            var mongoServerHost = Configuration["mongo:server:host"];
            if (string.IsNullOrEmpty(mongoServerHost))
            {
                mongoServerHost = "localhost";
            }

            if (!int.TryParse(Configuration["mongo:server:port"], out var mongoServerPort))
            {
                mongoServerPort = 27017;
            }

            var mongoDatabase = Configuration["mongo:server:database"];
            if (string.IsNullOrEmpty(mongoDatabase))
            {
                mongoDatabase = "UploadFile";
            }

            //services.AddTransient<ICrudProvider>(serviceProvider => new MongoCrudProvider(mongoDatabase, mongoServerHost, mongoServerPort));
            services.AddSingleton<ICrudProvider>(serviceProvider => new MongoCrudProvider(mongoDatabase, mongoServerHost, mongoServerPort));
            services.AddHttpContextAccessor();
        }
    }
}
